user
Create a visual representation of the following books and their release year.

Now complete the following instance -
Input: Harry Potter and the Philosopher's Stone, 1997
Harry Potter and the Chamber of Secrets, 1998
Output:
assistant
A bar graph depicting the two books and their release year, with 'Harry Potter and the Philosopher's Stone' on the X-axis and 'Harry Potter and the Chamber of Secrets' on the Y-axis.